The idea of xBR is to scale bitmaps using pattern recognition (like
HQx), but also uses a 2-stage set of interpolation rules, which
better handle more complex patterns such as antialiased lines and
curves. Background textures keep the sharp characteristics of the
original image rather than becoming blurry like with HQx.
xBRZ follows this idea, but has a different set of rules, focusing on
preserving small image features consisting of few pixels only, like
commonly used in faces.
Paths come from the repository package-file index for the observed builds. They describe archive/package associations, not every file that will exist on a running system after maintainer scripts, alternatives, generated state, diversions, or installation choices.
Each row is recorded package-index metadata for one version, architecture, suite, and repository. Names, URLs, and sizes are source-reported; a link is a potentially mutable retrieval location, not an OpenFactory redistribution claim or proof that OpenFactory retained the artifact bytes.